Quote:
Originally Posted by Aaron
Its not a fossil. That thing is modern. ...That's a pipe coral (Tubipora musica) probably dropped out of someone's aquarium. Definitely will fizz if you drop some dilute hydrochloric acid on it as like most corals, its structure is made of calcium carbonate (calcite or limestone) Those white worm-looking things on the red structure are the remains of calcareous tube worms (polychaetes). You've probably seen them on seashells at the beach...
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Glad someone else said it... Yeah it was dumped not a fossil. Pipe coral is brittle even fragile, and hollow, a fossilized coral is much harder, and solid. I've got a chunk of that stuff sitting around here somewhere that I used to have in my aquarium.
Jim